ssh_config(5) on macOS
The text 4a387e42a500, as Mac OS X 10.7.5, Mac OS X 10.7.4, Mac OS X 10.7.3, Mac OS X 10.7.2 shipped it.
OpenSSH SSH client configuration files
The text 4a387e42a500, as Mac OS X 10.7.5, Mac OS X 10.7.4, Mac OS X 10.7.3, Mac OS X 10.7.2 shipped it.
OpenSSH SSH client configuration files